		    <input type="text" ng-model="helloMsg"><button ng-click="doMethod()" type="button" class="btn btn-primary">Test has para method</button>
            <button ng-click="doNoParaMethod()" type="button" class="btn btn-primary">Test no parameter method</button>
            <button ng-click="doErrorMethod()" type="button" class="btn btn-primary">Test execute method got exception</button>
